JP2512590Y2 - Electric lock - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric lock mounted on a door for a building, a door for a locker, etc., for example, when a personal identification signal is input to the computer by a numeric keypad or a magnetic card, The present invention relates to a structure of an electric lock that can be applied to applications such as collating an input signal with a memory secret code, sending an unlocking signal to perform an unlocking operation when both match, or unlocking by an electric remote operation.

[0002]

2. Description of the Related Art Electronic locks of this type are available in Japanese Utility Model No. 3-4549.
As shown in Japanese Patent Publication No. 9, a latch head is rotatably provided on the front end side of a slider that can be moved forward and backward, and the latch head is axially attached to a latch rod and urged toward the door frame. A structure that allows the latch head to rotate is known. In this case, in the lock box of the electronic lock, a locking mechanism for removably locking the latch rod to the slider and a coupling mechanism between the electromagnetic actuator and the locking mechanism are provided between the slider and the latch during operation of the electromagnetic actuator. A first transmission mechanism for transmitting the fact that the engagement is released is internally provided.

[0003]

In the electric lock described above, the electromagnetic actuator is used because the locking mechanism and the first transmission mechanism must be provided inside the lock box in addition to the slider and the electromagnetic actuator. The operating structure was complicated, and most of the space in the narrow lock box was occupied, which contributed to the failure. Also in Japanese Patent Laid-Open No. 63-184673, a connecting machine
Since there was a structure, there were similar drawbacks.

Moreover, since each of the described mechanisms occupies an area in the lock box, it is not possible to prevent the electronic lock itself from becoming large, and it is impossible to attach it to a small door or the like.
The present invention has been made in view of the above circumstances, and an object thereof is to provide a simple, rational and reliable electric lock.

[0005]

A feature of the present invention for solving the above-mentioned problems is that a main element of a lock is mounted on a slider which is guided forward and backward toward an engaging hole or the like provided in a door frame. In this structure, the links and connecting means for connecting the main elements of the lock are swept away, and the slider, the rotatable latch head, and the electromagnetic actuator that releases or locks the rotation of the latch head are integrated into a structure. is there.

That is, the electronic lock according to the present invention comprises a slider that is biased in the direction of the door frame so that it can be moved back and forth, a latch head that is rotatably attached to the tip of the slider, and a latch head. a lock receiving portion provided on the rotation shaft side of the latch head, and an electromagnetic actuator which is moved together with the slider is mounted on the rear end side of the slider, the slide
Electromagnetic actuator placed toward the tip of the lid
And a stopper provided on the plunger, and the stopper is moved forward and backward with respect to the lock receiving portion of the latch head by moving the plunger forward and backward.

In a preferred embodiment, the plunger is biased toward the latch head, and the stopper is retracted from the lock receiving portion and unlocked by energizing the electromagnetic actuator.

[0008]

Operation: The electronic lock consists of a slider, a latch head and a plunge.
Since the electromagnetic actuator with the charger facing the latch head is mounted, it is mounted on the door in a miniaturized state. When locking, when the latch head hits the door frame and pushes the slider to the rear end side against the bias, and the door further advances and the latch head is aligned with the engagement hole provided in the door frame, the slider is biased. To move the latch head forward. Since the stopper of the plunger of the electromagnetic actuator locks the lock receiving portion of the latch head, the latch head cannot be rotated and the door is locked.

Upon unlocking, when a signal is sent to the electromagnetic actuator, the electromagnetic actuator operates the plunger to operate the stopper. The stopper separates from the lock receiving portion of the latch head and comes out of contact with the stopper integrated with the latch head, so that the latch head can rotate in the unlocking direction and the door can be opened freely.

[0010]

EXAMPLE This example will be described below with reference to FIGS.

The electronic lock 1 is urged in the crossing direction of the door frame A and is guided so as to be able to move forward and backward, and this slider 2
Of the latch head 3 rotatably provided at the tip of the lock head 3
And an electromagnetic actuator 5 mounted on the rear end side of the slider 2 and moved together with the slider 2, and a stopper 7 provided on a plunger 6 of the electromagnetic actuator 5. Preferably, the plunger 6 is arranged toward the tip of the slider 2 and is biased toward the latch head 3.

More specifically, the slider 2 is formed in a structure in which the latch head 3 and the electromagnetic actuator 5 can be mounted, and is housed in a lock box 8 so as to be able to move back and forth. Slider 2
Preferably has a slender U-shape from the bottom plate 11 and the pair of side plates 12 and 12, and has a tip formed on a pair of arms 13 and 13 extending from the side plate 12. The arm portions 13 and 13 are extended longer than the tip of the bottom plate 11, and the latch head 3 is rotatably attached to the shaft hole 14 via a shaft pin 15.

A plurality of cut grooves 16 for guiding the rotation of the latch head 3 are provided at the tip of the bottom plate 11 of the slider 2, and a guide plate 17 is provided in the vicinity of the upper part of the cut grooves 16 at desired intervals. It is installed between the side plates. In addition, the slider 2
An electromagnetic actuator 5 such as a solenoid is mounted on the latter half of the enclosure while being surrounded by the bottom plate 11 and the side plates 12, 12.

The electromagnetic actuator 5 can be fixed by a screw 19 from a countersunk hole 18 formed in the bottom plate 11. The plunger 6 of the electromagnetic actuator 5 is arranged toward the latch head 3. The stopper 7 is provided at the tip of the plunger 6, and the stopper 7 serves as a spring 22.
Is urged toward the latch head 3. The stopper 7 preferably has a substantially L-shape, and a guide plate 17
It is arranged so that it can move back and forth between the bottom plate 11 and the bottom plate 11. The cord 23 of the electromagnetic actuator 5 is pulled out from the rear end opening 20 of the slider 2. A tongue piece 21 can be projected downward from the bottom plate 11 of the slider 2.

Next, the latch head 3 is provided with a linear door stop surface 30, a curved surface 31 curved from the front end, and a rear end surface 32 intersecting each surface at the rear end, and the rear end surface 32 has a bearing portion. 33 are configured. The bearing 33 is projected in an arm shape narrower than the width of the latch head, and the shaft pin 15
Is formed with a receiving hole 34. This bearing 33
From this, a pair of ribs 35, 35 is projected, and in a shaft-attached state, the ribs 35, 35 are rotatably guided while being engaged with the cut grooves 16, 16.

The latch head 3 has a return spring 3
A rotation force is constantly applied to the door stop face side by 6 and the rear end face 32 is in contact with the tip of the bottom plate to maintain the posture in a straight line. The lock receiving portion 4 can be constructed by notching the rear end surfaces of the ribs 35, 35 in a stepwise manner. That is, when the latch head 3 is on a straight line, the notched lock receiving portion 4 is positioned in the space between the bottom plate 11 and the guide plate 17 so that the stopper 7 can move forward.

According to the above structure, the slider 2 is provided with the tongue piece 21.
Is urged toward the door frame by the spring 9, and the latch head 3 is engaged in the engagement hole C of the door frame A. In this case, since the plunger 6 of the electromagnetic actuator 5 is biased by the spring 22 and the stopper 7 is guided by the guide plate 17 and is engaged with the lock receiving portion 4 which is the stepped portion of the ribs 35, 35, the latch 7 is latched. The head 3 constitutes the locking position.

When the lock is released, the plunger 6 is moved to the spring 22 by a signal to the electromagnetic actuator 5.
Since it retreats against the lock, the stopper 7 is separated from the lock receiving portion 4 and is in the unlocked position. As a result, the latch head 3 is rotatable from the door stopper surface side, and the door B is opened.

Next, an application example of the electronic lock 1 to the lock box 8 will be described. The lock box 8 is composed of a base 40 and a cover 41, and the base 40 has a contact point 4 for detecting the electronic lock 1, the micro switch 42, the contact piece 43, and the contact piece 43.
4 and the wiring connector 45 are arranged so as to be electrically connected. The electronic lock 1 exchanges electric signals with a microcomputer (not shown) via the wiring connector 45. The base 40 includes guide ribs 47 and 48 that guide the slider 2 so that the slider 2 can move forward and backward.
A spring 9 that abuts the tongue 21 is housed between 7 and the tongue 21 is urged in a direction that abuts the regulating wall 49.

The operation will be further described. First, in the opened state, the latch head 3 of the electric lock 1 is projected toward the outside of the lock box 8 by the urging force of the spring 9. At this time, since the signal is cut off to the electromagnetic actuator 5 of the electric lock 1, the stopper 7 is pushed out toward the latch head 3 by the spring 22. The rotation of the latch head 3 is locked in the locked position by the contact between the stopper 7 and the lock receiving portion 4 and the contact between the bottom plate 11 of the slider 1 and the rear end surface 32 of the latch head 4.

When the door B starts to be closed, the curved surface 31 of the latch head 3 contacts the door frame A, and the pressing on the curved surface 31 pushes the electric lock 1 against the spring 9 toward the inside of the lock box 8. When the door B is further pushed, when the latch head 3 is aligned with the engagement hole C of the door frame A, the electric lock 1 is pushed by the spring 9, so that the latch head 3 jumps into the engagement hole C and the door is closed. Is completely locked. At this time, the contact piece 43 also hits the door frame and retracts against the spring 46 to open the contact 44 and close the electric circuit of the microswitch 42 to send a door closing signal to the microcomputer.

When unlocking, a keypad (not shown)
Alternatively, when a personal identification signal is input to the microcomputer by means such as a magnetic card, the signal is sent to the electromagnetic actuator 5. As a result, the plunger 6 retracts the stopper 7 against the spring 9, so that the stopper 7 is disengaged from the lock receiving portion 4 of the latch head 3, and the latch head 3 is free to rotate to the curved surface side to open the door. Rotates with.

In the above-described embodiment, the unlock signal is transmitted when the door is opened, but the electromagnetic actuator 5 is used when the door is closed.
It is also possible to leave the unlocking signal sent to and to perform the locking operation by turning off the unlocking signal when locking.

[0024]

As is apparent from the foregoing description of the invention], an electric lock according to the present invention the slider is retractable freely guided towards the door frame, the latch head rotatable latching head
Since the electromagnetic actuators with locking means for all are mounted together, it is possible to clean up the connecting members and components that connect each element, and the electric lock can be assembled into a compact rod-like shape. It was possible to make a unit and improve the electrical reliability.

Further, there is no need for a handle with an unlocking mechanism such as a rotary handle which is generally used in a conventional lock, and since a handle can be used, there is an advantage that the degree of freedom in aesthetic design of the door is increased.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of an electric lock according to the present invention.

FIG. 2 is a plan view of an electric lock according to the present invention.

FIG. 3 is a sectional view showing a locked state of the electric lock according to the present invention.

FIG. 4 is a sectional view showing an unlocked state of the electric lock according to the present invention.

FIG. 5 is a plan view of the inside of a lock box to which an electric lock according to the present invention is attached.

[Explanation of symbols]

 1 Electronic lock 2 Slider 3 Latch head 4 Lock receiving part 5 Electromagnetic actuator 6 Plunger 7 Stopper 8 Lock box 11 Bottom plate 12 Side plate 13 Arm part 16 Notch groove 17 Guide plate 21 Tongue piece 30 Door stop face 31 Curved surface 32 Rear end face

Claims (2)

(57) [Scope of utility model registration request] 1. A slider which is urged in a direction intersecting with a door frame so as to be capable of advancing and retreating, a latch head which is rotatably attached to a tip end portion of the slider, and a rotary shaft side of the latch head. A lock receiving portion, an electromagnetic actuator mounted on the rear end side of the slider and moved together with the slider, and arranged toward the front end side of the slider.
An electronic lock comprising a plunger of an electromagnetic actuator and a stopper provided on the plunger, and the stopper is advanced and retracted with respect to the lock receiving portion of the latch head by advancing and retracting the plunger. Wherein the plunger is biased toward the latch head, electronic lock stopper appears to be locked released retracted from the lock receiving portion by energization of the electromagnetic actuator.